Portion of a window blind control



FIG. 1 is a perspective view of a portion of a window blind control according to a first embodiment of our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a left side view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a top view thereof.

FIG. 6 is a bottom view thereof.

FIG. 7 is a perspective view of a portion of a window blind control according to a second embodiment of our new design; and,

FIG. 8 is a front view thereof, left side, right side, top, and bottom views, respectively, of the second embodiment being identical to left side, right side, top, and bottom views of the first embodiment.

The rear views form no part of the design and are omitted. The broken line showing of the portion of the window blind control is for the purpose of illustrating environmental structure and forms no part of the claimed design. 

We claim the ornamental design for a portion of a window blind control, as shown and described. 